[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

US7044545B2 - Vehicle seat - Google Patents

Vehicle seat Download PDF

Info

Publication number
US7044545B2
US7044545B2 US11/143,451 US14345105A US7044545B2 US 7044545 B2 US7044545 B2 US 7044545B2 US 14345105 A US14345105 A US 14345105A US 7044545 B2 US7044545 B2 US 7044545B2
Authority
US
United States
Prior art keywords
headrest
operating force
frame
headrest frame
seat back
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US11/143,451
Other languages
English (en)
Other versions
US20050280296A1 (en
Inventor
Masato Ohchi
Kenichi Takenaka
Hiroshi Tamura
Hiroyoshi Yamaguchi
Makoto Hasegawa
Takeshi Itoh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NHK Spring Co Ltd
Toyota Motor Corp
Original Assignee
NHK Spring Co Ltd
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NHK Spring Co Ltd, Toyota Motor Corp filed Critical NHK Spring Co Ltd
Assigned to NHK SPRING CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA reassignment NHK SPRING CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HASEGAWA, MAKOTO, ITOH, TAKESHI, OHCHI, MASATO, TAKENAKA, KENICHI, TAMURA, HIROSHI, YAMAGUCHI, HIROYOSHI
Publication of US20050280296A1 publication Critical patent/US20050280296A1/en
Application granted granted Critical
Publication of US7044545B2 publication Critical patent/US7044545B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/427—Seats or parts thereof displaced during a crash
    • B60N2/42772—Seats or parts thereof displaced during a crash characterised by the triggering system
    • B60N2/42781—Seats or parts thereof displaced during a crash characterised by the triggering system mechanical triggering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
    • B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
    • B60N2/4228—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the rear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/64—Back-rests or cushions
    • B60N2/66—Lumbar supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • B60N2/829—Head-rests movable or adjustable vertically slidable characterised by their adjusting mechanisms, e.g. electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/888—Head-rests with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest

Definitions

  • the invention relates to a vehicle seat in which a headrest is attached to a seat back.
  • a headrest is attached to a seat back of a vehicle seat, in order to protect the head of a seated user in the event that the vehicle is rear-ended.
  • the headrest is usually arranged at a position that is slightly apart from the head of the seated user in the rearward direction such that the head of the seated user is prevented from inappropriately contacting the head rest when the vehicle is driven.
  • Japanese Patent Application Publication No. JP(A) 2001-163099 discloses a known vehicle seat of the above-mentioned type. According to the technology disclosed in Japanese Patent Application Publication No. JP(A) 2001-163099, when a vehicle is rear-ended and the upper body of a seated user moves rearward in reaction to the rear-end collision, a load generated by this rearward movement is transmitted to right and left headrest holders (headrest supporting brackets) and therefore a headrest is moved upward while being tilted forward, whereby the head and the neck of the seated user are protected.
  • headrest holders headrest supporting brackets
  • passive means for transmitting the load generated by the rearward movement of the upper body of the seated user to the right and left headrest holders is formed mainly of a belt provided in a center portion of a seat back, which is located between the right and left headrest holders.
  • the load generated by the rearward movement of the upper body of the seated user is transmitted to the right and left headrest holders via the belt provided in the center portion. Therefore, the loads received by the right and left headrest holders are likely to be unequal. As a result, the situation may be caused in which the headrest is tilted in an undesired direction, and cannot be smoothly moved upward while being tilted forward.
  • a vehicle seat including a seat back frame; headrest supporting brackets which are provided in a center portion of the seat back frame, and to which a headrest is attached; a headrest frame which is supported by the seat back frame at at least two coupling portions such that the headrest is movable in a direction in which the headrest is moved closer to a head of a seated user; an operating force generating device which generates an operating force when receiving a load generated by a rearward movement of the seated user; and an operating force transmitting device which applies the operating force to the at least two coupling portions of the headrest frame in accordance with an operation of the operating force generating device, thereby moving the headrest frame.
  • the operating force generating device when the vehicle is rear-ended and the seated user moves rearward in reaction to the rear-end collision, the operating force generating device generates the operating force by receiving the load generated by the rearward movement of the seated user, and the operating force transmitting device moves both end portions of the headrest frame in accordance with the operation of the operating force generating device.
  • the headrest frame is moved along with the headrest supporting brackets smoothly and reliably, whereby the headrest attached to the headrest supporting brackets with headrest stays arranged between the headrest and the headrest supporting brackets is moved toward the head of the seated user smoothly and reliably.
  • the coupling portions may be provided at respective end portions of the headrest frame.
  • a direction in which the headrest frame is moved may be an upward direction.
  • the direction in which the headrest frame is moved is basically the upward direction.
  • the direction in which the headrest frame is moved is an upward-forward direction.
  • guide portions that guide the headrest frame in a direction in which the headrest frame is moved may be formed in the respective coupling portions.
  • the operating force transmitting device may be formed of paired pulling cable devices.
  • the operating force transmitting device which moves the both end portions of the headrest frame is formed of paired lightweight pulling cable devices which can be easily arranged in the seat back.
  • the operating force generated by the operating force generating device may be converted into a pulling force by the paired pulling cable devices.
  • the pulling cable devices may be routed such that the pulling cable devices cross each other, and each of the pulling cable devices is arranged in a shape with a gentle curvature. If the pulling cable devices are routed such that the pulling cable devices cross each other, and each of the pulling cable devices is arranged in a shape with a gentle curvature, the pulling cable devices can be operated smoothly.
  • guide portions that guide the headrest frame in a direction in which the headrest frame is moved may be formed in the respective coupling portions and each of one end portions of outer sheaths of the paired pulling cable devices, the one end portions facing respective end portions of the headrest frame, may be positioned on an extension of a line that extends in a direction in which the guide portion guides the headrest frame in a direction in which the headrest frame is moved are formed in the respective coupling portions.
  • the guide portions that guide the headrest frame in the direction in which the headrest frame is moved are formed in the respective coupling portions, when each of the one end portions of the outer sheaths of the paired pulling cable devices, the one end portions facing the respective end portions of the headrest frame, is positioned on the extension of the line that extends in the direction in which the guide portion guides the headrest frame, the paired pulling cable devices can move the both end portions of the headrest frame smoothly.
  • the operating force generating device receives the load generated by this rearward movement and therefore generates an operating force.
  • the operating force transmitting device moves the both end portions of the headrest frame.
  • the headrest frame is moved along with the headrest supporting brackets smoothly and reliably, and the headrest attached to the headrest supporting brackets with the headrest stays arranged between the headrest and the headrest supporting brackets is moved toward the head of the seated user smoothly and reliably. Therefore, according to the invention, when the vehicle is rear-ended, the headrest can be moved toward the head of the seated user smoothly and reliably. It is therefore possible to reliably reduce an impact on the neck of the seated user.
  • the both end portions of the headrest frame can be moved smoothly and reliably. Also, flexibility in arrangement of the operating force transmitting device in the seat back is increased, and an increase in the weight of the operating force transmitting device can be minimized.
  • a vehicle seat including a seat back frame; headrest supporting brackets which are provided in a center portion of the seat back frame, and to which a headrest is attached; a headrest frame which is supported by the seat back frame at at least two coupling portions such that the headrest is movable in a direction in which the headrest is moved closer to a head of a seated user; operating force generating means for generating an operating force when receiving the load generated by a rearward movement of the seated user; and operating force transmitting means for applying the operating force to the at least two coupling portions of the headrest frame in accordance with an operation of the operating force generating means, thereby moving the headrest frame.
  • FIG. 1 is a perspective view showing a main portion of a vehicle seat according to a first embodiment of the invention
  • FIG. 2 is a perspective view showing an inner structure of a seat back in FIG. 1 ;
  • FIG. 3 is a front view showing the inner structure of the seat back in FIG. 2 ;
  • FIG. 4 is a perspective view showing a structure of a portion near headrest supporting brackets in FIG. 3 ;
  • FIG. 5 is a perspective view showing a guide portion in FIG. 3 , viewed from the front;
  • FIG. 6 is a perspective view showing the guide portion in FIG. 3 , viewed from the rear;
  • FIG. 7 is a cross sectional view showing a structure of the guide portion in FIG. 3 ;
  • FIG. 8 is a perspective view showing a pressure plate of operating force generating means in FIG. 1 , viewed from the front;
  • FIG. 9 is a perspective view showing the pressure plate of the operating force generating means in FIG. 1 , viewed from the rear;
  • FIG. 10 is a perspective view showing an operating force generating mechanism of the operating force generating means in FIG. 1 , viewed from the front;
  • FIG. 11 is a front view showing the operating force generating mechanism of the operating force generating means in FIG. 1 ;
  • FIG. 12 is a side view schematically showing a structure of the operating force generating mechanism of the operating force generating means in FIG. 1 ;
  • FIG. 13 is a rear view of an upper portion of a seat back frame, showing how pulling cable devices in FIG. 1 are routed;
  • FIG. 14 is a side view schematically showing an operation state of the operating force generating mechanism in FIG. 12 .
  • FIG. 1 is a perspective view showing a structure of a main portion of a vehicle seat according to a first embodiment of the invention.
  • the vehicle seat includes a seat back 3 that is coupled with a rear portion of a seat cushion 1 so as to be tiltable forward/rearward using a tilting mechanism 2 .
  • a headrest 4 is detachably attached to an upper portion of the seat back 3 with headrest stays 4 A, 4 A arranged between the headrest 4 and the seat back 3 .
  • a seat back frame 5 which is a frame of the seat back 3 , is embedded in a seat back pad (not shown) formed of a cushion material, for example, urethane foam.
  • the seat back frame 5 is formed by connecting an upper pipe 5 A, right and left side frames 5 B, 5 B, and a lower frame 5 C integrally with each other by welding.
  • the upper pipe 5 A has a portal shape viewed from the front, which is formed by bending.
  • the upper pipe 5 A is an upper portion of the seat back frame 5 .
  • the lower frame 5 C has a strip shape.
  • the lower frame 5 C is a lower portion of the seat back frame 5 .
  • Lower end portions of the side frames 5 B, 5 B of the seat back frame 5 are tiltably connected to a pivot 2 A of the tilting mechanism 2 .
  • a contour mat 6 is provided inside the seat back frame 5 .
  • the contour mat 6 is an elastic mat having a flat shape.
  • the contour mat 6 is formed of wires, for example, piano wires.
  • Engagement hooks 6 A, 6 A for attaching the contour mat 6 to the seat back frame 5 are formed.
  • One of the engagement hooks 6 A, 6 A is formed in a right upper portion of the contour mat 6
  • the other engagement hook 6 A is formed in a left upper portion of the contour mat 6 .
  • Support rods 5 A 2 , 5 A 2 each of which protrudes inward and each of whose end is bent upward, are formed.
  • One of the support rods 5 A 2 , 5 A 2 is attached to one of vertical pipe portions 5 A 1 , 5 A 1 of the upper pipe 5 A.
  • the other support rod 5 A 2 is attached to the other vertical pipe portion 5 A 1 of the upper pipe 5 A.
  • the vertical pipe portions 5 A 1 , 5 A 1 extend in the vertical direction.
  • the engagement hooks 6 A, 6 A are hooked on the respective support rods 5 A 2 , 5 A 2 such that the upper portion of the contour mat 6 is supported by the seat back frame 5 .
  • a headrest frame 7 to which the headrest 4 is attached, is arranged in an upper area inside the seat back frame 5 .
  • the headrest frame 7 is formed of a pipe member that has a portal shape viewed from the front, which is formed by bending.
  • a center portion 7 A of a portion extending in the horizontal direction, a lower end portion 7 B of a right portion extending in the vertical direction, and a lower end portion 7 B of a left portion extending in the vertical direction are pressed so as to be flat (refer to FIG. 3 ).
  • Paired headrest supporting brackets 7 C, 7 C are attached to a front surface of the center portion 7 A of the headrest frame 7 by welding.
  • the headrest supporting brackets 7 C, 7 C protrude upward from the center portion 7 A of the headrest frame 7 .
  • An upper portion of one of the headrest supporting brackets 7 C, 7 C is inserted in one of guide rings 5 A 4 , 5 A 4 , which is attached to a front surface of one of lateral pipe portions 5 A 3 , 5 A 3 of the upper pipe 5 A of the seat back frame 5 .
  • an upper portion of the other headrest supporting bracket 7 C is inserted in the other guide ring 5 A 4 which is attached to a front surface of the other lateral pipe portion 5 A 3 of the upper pipe 5 A of the seat back frame 5 (refer to FIG. 4 ).
  • the right headrest stay 4 A which protrudes from a lower portion of the headrest 4 is inserted in one of headrest supporting brackets 7 C, 7 C.
  • the left headrest stay 4 A which protrudes from the lower portion of the headrest 4 is inserted in the other headrest supporting bracket 7 C.
  • the headrest 4 is detachably attached to the headrest frame 7 (refer to FIG. 1 ).
  • Both end portions of the headrest frame 7 namely, the right and left flat lower end portions 7 B, 7 B of the head rest frame 7 are coupled with the seat back frame 5 .
  • One of guide portions 8 , 8 is arranged between the right lower end portion 7 B of the headrest frame 7 and the seat back frame 5 .
  • the other guide portion 8 is arranged between the left lower end portion 7 B of the headrest frame 7 and the seat back frame 5 .
  • the lower end portions 7 B, 7 B are movable in the vertical direction.
  • the headrest 4 attached to the headrest frame 7 can be moved in the upward-forward direction, that is, toward the head of the seated user seated in the vehicle seat (refer to FIG. 3 ).
  • tension springs 9 , 9 are provided such that the headrest frame 7 is held at a normal position.
  • One of the tension springs 9 , 9 is provided between one of the lower portions 7 B, 7 B of the headrest frame 7 , and one of the side frames 5 B, 5 B of the seat back frame 5 .
  • the other tension spring 9 is provided between the other lower portion 7 B of the headrest frame 7 , and the other side frame 5 B of the seat back frame 5 .
  • each guide portion 8 includes a guide plate 8 A and a sliding pin 8 B.
  • the guide plate 8 A is welded to the vertical pipe portion 5 A 1 of the upper pipe 5 A forming the upper portion of the seat back frame 5 .
  • the sliding pin 8 B penetrates the flat lower portion 7 B of the headrest frame 7 , and attached to the lower portion 7 B (refer to FIG. 7 ).
  • the guide plate 8 A has a guide surface 8 C overlapped with an outer side surface of the flat lower portion 7 B of the headrest frame 7 .
  • a guide hole 8 D extending in the vertical direction is formed in the guide surface 8 C.
  • the sliding pin 8 B protrudes outward from the flat lower portion 7 B of the headrest frame 7 , and slidably penetrates the guide hole 8 D formed in the guide plate 8 A (refer to FIG. 7 ).
  • the sliding pin 8 B is prevented from being removed by washers W, W.
  • One of the washers W, W is fixed to an inner end portion of the sliding pin 8 B by one of set screws S, S, and the other washer W is fixed to an outer end portion of the sliding pin 8 B by the other set screw S.
  • operating force generating means 10 is provided on a front surface side of a center portion of the lower frame 5 C.
  • the center portion is positioned in the center of the lower frame 5 C in the horizontal direction.
  • the lower frame 5 C forms the lower portion of the seat back frame 5 .
  • the operating force generating means 10 receives the load generated by the rearward movement of the lumbar part of the seated user, and generates an operating force.
  • the operating force generating means 10 includes a pressure plate 10 A which receives the load generated by the rearward movement of the lumbar part of the seated user, and an operating force generating mechanism 10 B which receives the load via the pressure plate 10 A.
  • the pressure plate 10 A is formed of, for example, a rectangular synthetic resin plate or metal plate. As shown in FIGS. 8 and 9 , the pressure plate 10 A is hung, at right and left two upper portions, from a wire 6 B of the contour mat 6 by using coupling rings 10 C, 10 C. The wire 6 B extends in the horizontal direction. Meanwhile, the operating force generating mechanism 10 B is provided on a vertically long supporting bracket 10 D.
  • the supporting bracket has a groove shape whose front side is open. A backboard (reference numeral is omitted) of the supporting bracket 10 D is fixed to the front surface of the lower frame 5 C by spot welding or the like.
  • the operating force generating mechanism 10 B includes a fixed shaft 10 F and a movable shaft 10 H.
  • the fixed shaft 10 F penetrates upper portions of right and left side walls 10 E, 10 E of the supporting bracket 10 D, and are attached to the supporting bracket 10 D.
  • the movable shaft 10 H penetrates guide holes 10 G, 10 G.
  • One of the guide holes 10 G, 10 G is formed in a lower portion of the right side wall 10 E, and the other guide hole 10 G is formed in a lower portion of the left side wall 10 E, the guide holes 10 , 10 G extending in the vertical direction.
  • the fixed shaft 10 F and the movable shaft 10 are attached to the supporting bracket 10 D.
  • a fixed roller 10 J and an upper end portion of an upper link 10 K are rotatably connected to the fixed shaft 10 F.
  • a movable roller 10 L and a lower end portion of a lower link 10 M are rotatably connected to the movable shaft 10 H.
  • a lower end portion of the upper link 10 K and an upper end portion of the lower link 10 M are coupled with each other by using a pivot 10 N.
  • a pressure roller 10 P is rotatably connected to the pivot 10 N.
  • paired pulling cable devices 11 , 11 are provided as operating force transmitting means.
  • the pulling cable devices 11 , 11 move the headrest frame 7 upward in accordance with the operation of the operating force generating mechanism 10 B of the operating force generating means 10 .
  • the pulling cable devices 11 , 11 include outer sheaths 11 A, 11 A, respectively. One end portion of one of the outer sheaths 11 A, 11 A is fitted in one of cable stopper pieces 10 Q, 10 Q. Similarly, one end portion of the other outer sheath 11 A is fitted in the other cable stopper piece 10 Q.
  • the cable stopper pieces 10 Q, 10 Q are formed, by bending, in the upper end portion of the supporting bracket 10 D (refer to FIGS. 10 and 11 ).
  • One of the outer sheaths 11 A, 11 A is fixed to the cable stopper piece 10 Q on the left side at one end portion.
  • the other end portion of this outer sheath 11 A is fixed to a cable stopper piece 8 E (refer to FIGS. 5 and 6 ) that is formed, by bending, in the upper end portion of the guide plate 8 A of the guide portion 8 on the left side.
  • the position at which the other end portion of the outer sheath 11 A is fixed to the cable stopper piece 8 E is on the extension of the line which extends in the direction in which the guide hole 8 D extends.
  • the other outer sheath 11 A is fixed to the cable stopper piece 10 Q on the right side at one end portion.
  • this outer sheath 11 A is fixed to a cable stopper piece 8 E (refer to FIG. 6 ) that is formed, by bending, in the upper end portion of the guide plate 8 A of the guide portion 8 on the right side.
  • the position at which the other end portion of the outer sheath 11 A is fixed to the cable stopper piece 8 E is on the extension of the line which extends in the direction in which the guide hole 8 D extends.
  • the inner cables 11 B, 11 B are routed on the front surface side of the fixed roller 10 J, on the rear surface side of the pressure roller 10 P, and on the front surface side of the movable roller 10 L, as schematically shown in FIG. 12 .
  • the fixed roller 10 J, the pressure roller 10 P and the movable roller 10 L form the operating force generating mechanism 10 B.
  • one of stopper rings 11 C, 11 C is fixed to the other end portion of one of the inner cables 11 B, 11 B, which comes out of the other end portion of one of the outer sheaths 11 A, 11 A.
  • the other stopper ring 11 C is fixed to the other end portion of the other inner cable 11 B, which comes out of the other end portion of the other outer sheath 11 A.
  • Each stopper ring 11 C is fixed to the sliding pin 8 B of the guide portion 8 along with the washer W by the set screw S.
  • the paired pulling cable devices 11 , 11 are routed such that the pulling cable devices 11 , 11 cross each other, and each of the pulling cable devices is arranged in a shape with a gentle curvature on the rear surface side of the contour mat 6 .
  • the inner cables 11 B, 11 B are smoothly operated without being entangled with each other.
  • An upper portion of one of the pulling cable devices 11 , 11 is attached to one of the lateral pipe portions 5 A 3 , 5 A 3 of the upper pile 5 A of the seat back frame 5 by one of cable clips 12 , 12 .
  • an upper portion of the other pulling cable device 11 is attached to the other lateral pipe portion 5 A 3 of the upper pile 5 A of the seat back frame 5 by the other cable clip 12 .
  • the headrest 4 is arranged at a position that is slightly apart from the head of the seated user in the rearward direction, when the seated user has his/her back against the seat back 3 , that is, when the seated user is in the normal seated posture.
  • the pressure plate 10 A of the operating force generating means 10 embedded in the seat back 3 is moved rearward due to the load generated by the rearward movement of the seated user.
  • each sliding pins 8 B of the guide portion 8 which is coupled with the other end portion of the corresponding inner cable 11 B by using the stopper ring 11 C moves upward along the guide hole 8 D (refer to FIG. 7 ).
  • the lower end portions 7 B, 7 B smoothly move upward in a balanced manner against the spring tension of the tension springs 9 , 9 (refer to FIGS. 4 and 5 ).
  • One of the lower end portions 7 B, 7 B is positioned at the right end portion of the headrest frame 7
  • the other lower end portion 7 B is positioned at the left end portion of the headrest frame 7 .
  • the headrest frame 7 is smoothly moved upward along with the headrest supporting brackets 7 C, 7 C, and the headrest supporting brackets 7 C, 7 C move upward while being guided by the respective guide rings 5 A 4 , 5 A 4 , whereby the headrest 4 attached to the headrest supporting brackets 7 C, 7 C is instantaneously moved in the upward-forward direction, that is, toward the head of the seated user smoothly and reliably.
  • One of the headrest stays 4 A, 4 A is arranged between the headrest 4 and one of the headrest supporting brackets 7 C, 7 C.
  • the other headrest 4 A is arranged between the headrest 4 and the other headrest supporting bracket 7 C.
  • the head rest 4 when the vehicle is rear-ended, the head rest 4 can be instantaneously moved in the upward-forward direction, that is, toward the head of the seated user smoothly and reliably. It is therefore possible to reliably reduce the impact on the neck of the seated user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US11/143,451 2004-06-22 2005-06-03 Vehicle seat Expired - Fee Related US7044545B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-184131 2004-06-22
JP2004184131A JP4102779B2 (ja) 2004-06-22 2004-06-22 車両用シート

Publications (2)

Publication Number Publication Date
US20050280296A1 US20050280296A1 (en) 2005-12-22
US7044545B2 true US7044545B2 (en) 2006-05-16

Family

ID=34937447

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/143,451 Expired - Fee Related US7044545B2 (en) 2004-06-22 2005-06-03 Vehicle seat

Country Status (5)

Country Link
US (1) US7044545B2 (ja)
EP (1) EP1609666B1 (ja)
JP (1) JP4102779B2 (ja)
KR (1) KR100655667B1 (ja)
CN (1) CN100554034C (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060006709A1 (en) * 2004-07-02 2006-01-12 Honda Motor Co., Ltd. Head rest device
US20060103189A1 (en) * 2004-09-27 2006-05-18 Mladen Humer Vehicle seat having active head restraint system
US20060202524A1 (en) * 2004-08-19 2006-09-14 Nhk Spring Co., Ltd. Vehicle seat
US20070262631A1 (en) * 2004-10-06 2007-11-15 Johnson Controls Gmbh Actuating Element for a Crash-Active Head Rest
US20080007106A1 (en) * 2006-06-16 2008-01-10 Schukra Of North America Head Rest Release Mechanism
US20080061608A1 (en) * 2006-09-13 2008-03-13 Nhk Spring Co., Ltd. Car seat
US20090102254A1 (en) * 2007-10-17 2009-04-23 Lear Corporation Active head restraint system with actuating system for a vehicle seat
US20090126520A1 (en) * 2007-11-21 2009-05-21 Toyota Boshoku Kabushiki Kaisha Clutch mechanism
US20100148544A1 (en) * 2007-02-07 2010-06-17 Johnson Control Technology Company Actuating means for a crash-active head restraint
US20110101760A1 (en) * 2009-11-04 2011-05-05 Toyota Boshoku Kabushiki Kaisha Vehicle seat

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4492870B2 (ja) * 2004-12-27 2010-06-30 テイ・エス テック株式会社 車両用シート
PL1924465T3 (pl) * 2005-09-01 2012-10-31 Johnson Controls Tech Co System aktywnych zagłówków
DE102006032639B3 (de) * 2006-07-13 2007-10-11 Johnson Controls Gmbh Aktuierungsmittel für die Kopfstütze eines Fahrzeugsitzes
WO2008078815A1 (ja) * 2006-12-27 2008-07-03 Nhk Spring Co., Ltd. アクティブヘッドレストのヘッドレスト傾動装置
JP4287879B2 (ja) * 2006-12-27 2009-07-01 日本発條株式会社 アクティブヘッドレストのヘッドレスト傾動装置
DE102008006413A1 (de) * 2007-08-21 2009-02-26 Johnson Controls Gmbh Fahrzeugsitz
ITTO20070747A1 (it) * 2007-10-22 2009-04-23 Lear Corp Italia S R L A So Ci Sedile di autoveicolo
JP5119906B2 (ja) * 2007-12-25 2013-01-16 トヨタ紡織株式会社 車両用シートのヘッドレスト
US8727437B2 (en) * 2008-06-27 2014-05-20 Johnson Controls Technology Company Actuator for crash activated head restraint
US7758114B2 (en) * 2008-07-15 2010-07-20 Tachi-S Co. Ltd. Seat back structure of vehicle seat
US8205941B2 (en) 2008-07-30 2012-06-26 Trw Vehicle Safety Systems Inc. Active head restraint for a vehicle seat
KR101054755B1 (ko) * 2008-08-27 2011-08-05 기아자동차주식회사 시트백 연동형 전후 슬라이딩 헤드레스트 장치
JP5190692B2 (ja) * 2008-09-10 2013-04-24 トヨタ紡織株式会社 車両用シートのクラッチ機構
JP5190693B2 (ja) * 2008-09-10 2013-04-24 トヨタ紡織株式会社 車両用シートのクラッチ機構
DE112011102423T5 (de) * 2010-07-21 2013-05-16 Ts Tech Co., Ltd. Fahrzeugsitz
JP5802368B2 (ja) * 2010-07-21 2015-10-28 テイ・エス テック株式会社 乗物用シート
WO2012111097A1 (ja) 2011-02-15 2012-08-23 トヨタ自動車株式会社 車両用ヘッドレスト装置
JP5857510B2 (ja) * 2011-08-04 2016-02-10 トヨタ紡織株式会社 車両用シートのフレーム構造
JP5724831B2 (ja) * 2011-11-04 2015-05-27 トヨタ紡織株式会社 車両用シート
JP6351998B2 (ja) * 2014-02-28 2018-07-04 テイ・エス テック株式会社 車両用シート
CN106080302A (zh) * 2016-06-18 2016-11-09 金余和 一种儿童安全座椅吸能缓冲系统
US10166900B2 (en) 2017-02-09 2019-01-01 Ford Global Technologies, Llc Internal upper seatback support for driving and sleeper seats
US10065535B1 (en) * 2017-03-02 2018-09-04 Ford Global Technologies, Llc Seatback lift mechanism for a supine motor vehicle seating assembly
US10434905B2 (en) 2017-03-02 2019-10-08 Ford Global Technologies, Llc Collapsible lift mechanism for H-point lift
US10166887B2 (en) 2017-03-02 2019-01-01 Ford Global Technologies, Llc Seatback lift mechanism for a supine motor vehicle seating assembly
US10569674B2 (en) 2017-03-02 2020-02-25 Ford Global Technologies, Llc Mechanism for a supine motor vehicle seating assembly
US10081270B1 (en) 2017-03-03 2018-09-25 Ford Global Technologies, Llc Front seat sleeper seat and features
US10525861B2 (en) 2017-03-22 2020-01-07 Ford Global Technologies, Llc Leg support options for sleeper seats
DE102017212287A1 (de) * 2017-07-18 2019-01-24 Volkswagen Aktiengesellschaft Rückenlehnenteil eines Fahrzeugsitzes mit einer Lehnenkopfverstelleinrichtung
US10632873B2 (en) 2018-04-04 2020-04-28 Ford Global Technologies, Llc Seat structure dual motion recliner pivot mechanism
US11007908B2 (en) 2019-06-25 2021-05-18 Ford Global Technologies, Llc Upper thoracic support paddle attachment assembly
JP7310651B2 (ja) * 2020-02-28 2023-07-19 トヨタ紡織株式会社 バックフレーム

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5823619A (en) * 1996-03-04 1998-10-20 Trw Occupant Restraint Systems Gmbh Vehicle seat
US5882071A (en) * 1996-08-28 1999-03-16 Trw Occupant Restraint Systems Gmbh Vehicle seat with headrest adjustable on the backrest
US6082817A (en) * 1997-02-27 2000-07-04 Inova Gmbh Technische Entwicklungen Motor vehicle seat
JP2001163099A (ja) 1999-12-13 2001-06-19 Tachi S Co Ltd 車両用シート構造
US6273511B1 (en) * 1998-06-22 2001-08-14 Lear Corporation Seat and headrest arrangement for a vehicle
US20020195846A1 (en) * 2001-06-26 2002-12-26 Kou Masuda Seat apparatus for automobile
US6550856B1 (en) * 1999-09-17 2003-04-22 Lear Corporation Vehicle seat
US6572186B1 (en) * 1999-10-04 2003-06-03 Lear Corporation Multiple function sleeve
US6824212B2 (en) * 2000-08-24 2004-11-30 Lear Corporation Vehicle seat

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5927804A (en) * 1998-02-11 1999-07-27 Trw Inc. Vehicle occupant protection apparatus
DE19951967A1 (de) * 1999-10-28 2001-05-03 Bayerische Motoren Werke Ag Fahrzeugsitz mit einer Rückenlehne
DE10054826C2 (de) * 2000-11-04 2003-04-24 Faurecia Autositze Gmbh & Co Kraftfahrzeugsitz
KR100461123B1 (ko) * 2001-08-30 2004-12-13 현대자동차주식회사 럼버 서포트를 이용한 헤드레스트의 목부상 방지 장치
JP2004106647A (ja) 2002-09-17 2004-04-08 Shigeru Co Ltd むち打ち防止構造
DE20217258U1 (de) * 2002-11-08 2004-03-18 Lear Corporation, Southfield Kopfstützenverstellvorrichtung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5823619A (en) * 1996-03-04 1998-10-20 Trw Occupant Restraint Systems Gmbh Vehicle seat
US5882071A (en) * 1996-08-28 1999-03-16 Trw Occupant Restraint Systems Gmbh Vehicle seat with headrest adjustable on the backrest
US6082817A (en) * 1997-02-27 2000-07-04 Inova Gmbh Technische Entwicklungen Motor vehicle seat
US6273511B1 (en) * 1998-06-22 2001-08-14 Lear Corporation Seat and headrest arrangement for a vehicle
US6550856B1 (en) * 1999-09-17 2003-04-22 Lear Corporation Vehicle seat
US6572186B1 (en) * 1999-10-04 2003-06-03 Lear Corporation Multiple function sleeve
JP2001163099A (ja) 1999-12-13 2001-06-19 Tachi S Co Ltd 車両用シート構造
US6824212B2 (en) * 2000-08-24 2004-11-30 Lear Corporation Vehicle seat
US20020195846A1 (en) * 2001-06-26 2002-12-26 Kou Masuda Seat apparatus for automobile

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7641280B2 (en) * 2004-07-02 2010-01-05 Honda Motor Co., Ltd. Head rest device
US20060006709A1 (en) * 2004-07-02 2006-01-12 Honda Motor Co., Ltd. Head rest device
US20060202524A1 (en) * 2004-08-19 2006-09-14 Nhk Spring Co., Ltd. Vehicle seat
US7523987B2 (en) * 2004-08-19 2009-04-28 Nhk Spring Co., Ltd. Vehicle seat
US20060103189A1 (en) * 2004-09-27 2006-05-18 Mladen Humer Vehicle seat having active head restraint system
US8894144B2 (en) 2004-09-27 2014-11-25 Lear Corporation Vehicle seat having active head restraint
US8434818B2 (en) 2004-09-27 2013-05-07 Lear Corporation Vehicle seat having active head restraint
US8215709B2 (en) 2004-09-27 2012-07-10 Lear Corporation Vehicle seat having active head restraint system
US7644987B2 (en) 2004-09-27 2010-01-12 Lear Corporation Vehicle seat having active head restraint system
US7992932B2 (en) * 2004-10-06 2011-08-09 Johnson Controls Gmbh Actuating element for a crash-active head rest
US20070262631A1 (en) * 2004-10-06 2007-11-15 Johnson Controls Gmbh Actuating Element for a Crash-Active Head Rest
US20080007106A1 (en) * 2006-06-16 2008-01-10 Schukra Of North America Head Rest Release Mechanism
US7484798B2 (en) * 2006-09-13 2009-02-03 Nhk Spring Co., Ltd. Car seat
US20080061608A1 (en) * 2006-09-13 2008-03-13 Nhk Spring Co., Ltd. Car seat
US20100148544A1 (en) * 2007-02-07 2010-06-17 Johnson Control Technology Company Actuating means for a crash-active head restraint
US8388059B2 (en) * 2007-02-07 2013-03-05 Johnson Controls Technology Company Actuating means for a crash-active head restraint
US20090102254A1 (en) * 2007-10-17 2009-04-23 Lear Corporation Active head restraint system with actuating system for a vehicle seat
US7850235B2 (en) * 2007-10-17 2010-12-14 Lear Corporation Active head restraint system with actuating system for a vehicle seat
US20090126520A1 (en) * 2007-11-21 2009-05-21 Toyota Boshoku Kabushiki Kaisha Clutch mechanism
US8292363B2 (en) * 2007-11-21 2012-10-23 Toyota Boshoku Kabushiki Kaisha Clutch mechanism
US20110101760A1 (en) * 2009-11-04 2011-05-05 Toyota Boshoku Kabushiki Kaisha Vehicle seat
US8827360B2 (en) * 2009-11-04 2014-09-09 Toyota Boshoku Kabushiki Kaisha Vehicle seat

Also Published As

Publication number Publication date
JP4102779B2 (ja) 2008-06-18
KR100655667B1 (ko) 2006-12-11
EP1609666A2 (en) 2005-12-28
JP2006007830A (ja) 2006-01-12
US20050280296A1 (en) 2005-12-22
EP1609666B1 (en) 2012-04-18
CN100554034C (zh) 2009-10-28
KR20060049414A (ko) 2006-05-18
CN1712274A (zh) 2005-12-28
EP1609666A3 (en) 2009-12-16

Similar Documents

Publication Publication Date Title
US7044545B2 (en) Vehicle seat
US7234769B2 (en) Vehicle seat
US7926872B2 (en) Vehicle seat
US11001175B2 (en) Vehicle seat
US8585139B2 (en) Vehicle seat
JP5231384B2 (ja) 車両用シート
JP4392309B2 (ja) 車両用シート
JP4392308B2 (ja) 車両用シート
JP4082391B2 (ja) 車両用シート
JP4297838B2 (ja) 車両用シート
EP2106962B1 (en) Trigger mechanism for an active headrest system and vehicle seat
JP6663557B2 (ja) 乗物用シートのフレーム構造、及びそれを用いた乗物用シート
EP1990235A1 (en) Motor-vehicle seat with a headrest provided with an anti-whiplash device
JP4629387B2 (ja) 車両用シート
JP2006007827A (ja) 車両用シート
JP2019010903A (ja) 車両用シート
JP2006007829A (ja) 車両用シート
JP2019123376A (ja) 車両用シートのシートバック

Legal Events

Date Code Title Description
AS Assignment

Owner name: NHK SPRING CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OHCHI, MASATO;TAKENAKA, KENICHI;TAMURA, HIROSHI;AND OTHERS;REEL/FRAME:016658/0637

Effective date: 20050524

Owner name: TOYOTA JIDOSHA KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OHCHI, MASATO;TAKENAKA, KENICHI;TAMURA, HIROSHI;AND OTHERS;REEL/FRAME:016658/0637

Effective date: 20050524

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.)

LAPS Lapse for failure to pay maintenance fees

Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.)

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362